Method and apparatus for packing material



W. H. MASON. METHOD AND APPARATUS FOR PACKING MATERIAL- APPLICATION manAPR. 1, 1915.

Patented Nov. 23, 1920.

b a J WW W fi 7/ 3 a 1 kiwi Q ;wIL LIAM H.

AIN'T Joe-1a,?

iviAsoN, OF EASTON, PENNSYLVANIA, A-ssIGNOB. ONE-HALF'TO."

WALTER s. v aimoiair, or EAS'ION, PENNSYLVANIA, V

METHoi') AN APPARATUS FOR. rAcKiiver MAT RIAL.

' Application filed: April 7,

To all whom it may concernf Be it known that I, WVILLIAM H. MASON, acitizen'of-the United States, and a-resident of Easton, in the'countyof- Northampton and State of Pennsylvania, have invented certain new anduseful Improvements in Methods and Apparatus for Packing Material, ofwhich the following is a description.

My invention relates to a method and apparatus for packing material andmoreparticularly pulverulent material such as Portland'cement. For theexport of such cement,

it has-heretofore been the custom to pack the same in a comparativelyloose condition in wooden barrels. \Vhen the barrels packed in this waybecome knocked or shaken about in shipment, the cement becomes compactetin the barrels so that after a little-while the latter remain onlypartly filled and the cement .oflers substantially no resistance againstthe crushing in of the barrels by superincumbent bodies. The liabilityof the barrels to breakage is also increased by the fact that the dryPortland cement tends to.

absorb the moisture from the wood of which the barrels are ordinarilymade. The break ing or crushing of the barrels permits the cement toleak out from the barrelsiii considerable quantities. This defect hasbeen a very serious one in connection with the export of Portland cementand'has entailed considerable loss. The principal object of my inventionis to provide improved apparatus and an improved process for obviatingthis defect, and I preferably accomplish this object by apparatus and amethod whereby the cement or other material is very tightly compacted inthe barrel or other receptacle prior to the shipment thereof so thatthere is substantially no diminution in volume of the cement or othermaterial duringshipment an d the said material together with thereceptacle constitute a substantially solid mass, the cement resemblinga soft-stone and reinforcing the barrel and thus practically eliminatingdanger of crushing the barrel. Other objects of my invention will appearmore fully in the following Specification and appended claims:

r In order that my invention may be-more clearly understood,attention'is hereby directed to the accompanying drawiiigillustrating myinvention, and in which Figure 1'is a view partly in elevation and ISpec ificationof LettersPatent. P tf t d Nov gg 1920' 1915. Serial No.19,664

partlyin vertical section ill strating the principal portion of niyimproved apparatus afterthe cement or other materialhas been completelycompactediin a barrel;

Fig. 2 is a similar'view illustrating a por; tion of the apparatus shownin Fig. 'l'i'n a position prior to the compacting of the material in thebarrel; F V

Fig. '3 is, a front elevation partly in section of hoisting apparatusemployed with the apparatus shown in Fig. 1';

' F a side view of the same; and r F 1g. -5 is a sideview of a detail-ofconstruction; p

In all of the views, like parts are designated by the samere'ferencenumerals;

Referring to the drawings, the numeral 1 designates a table'or supporton which rests a barrel 2 into which the Portland cement' or othermaterial is to be packed.

The table or support 1, as shown, isprovided with an annular upwardlyextending rim 3 within which fits a casing 8 which rests upon said tableor's'upport. The casing 3 fits about the lower portion of the barrel 2and prevents the bulgingout or other deformation or weakening thereof byreason of the large outward pressure thereon during the compactingoperation a'ndalso holds the barrel in position on the table orsupport.Projecting from the lower central portion of thetable or support 1 is ahollow cylindrical member or piston 4: which, I is adapted toreciprocate vertically in the cylinder 5 In order that the table or"support 1 and thepiston 4 may be made as light.

as possible, I preferably make the piston V hollow, an opening 6extending from a point near the bottom, of the piston upwardly.

through the table-or support .1. The cylinder 5 is provi c'led with aHat upperportion 7 on which the table or supportlis adapted to rest whenin, its lowermost position. 1 The piston ispreferably caused to moveupwardly in the cylinder by air, steam, or other fluid pressure,suitable passagesbeing provided in the cylinder a dpiston for the inletand GXlIELUSlTOf the air, steam, or other fluid. As shown in Fig." 1',the cylinder is provided; with a tubularjprojection S, this; projectionbeing provided with a threaded portion 9 by which suitable connectionmay 1 l be made, to a source of compressediairfor. steam 'or-other fluid,under pressure, the; said: fluid being adapted to pass within the c'yll .iit

'* fluid is admltted, into said passage.

inder 5 through the passage 10. A vertical opening or passage 11, whichmay be drilled or otherwise formed in the cylinder, permits so that nofurther fluid is admitted within the cylinder until the 7 piston hasagain moved'downwardly sufiiciently' far to place the passage 12 incommunication with the passage 10. The piston is provided with a passage13, one end of whichcommunicates with the space within the cylinder 5below the piston, and the other end of which extends laterally and isadapted when the piston is in a sulliciently elevated position tocommunicate with an opening 14 leading into the vertical opening 15,which may be drilled or otherwise suitably formed in the cylinder 5. Athreaded plug 15 closes the lower end of the opening 15. From theopening 15, a passage 16 extends laterally through a boss or projection17 which is integral with the cylinder 5. The said boss or projection isprovided with a threaded portion 18 whereby an exhaust pipe may besecured to the cylinder 5 in position to communicate with the passage16. lVith this construction, when the piston is elevated sufiiciently toplace the passage 13 in communication with the opening 14, the air orother fluid in the cylinder under the piston escapes through the passage13, the opening 1& and the passages 15 and 16, thereby permitting theplatform and the parts carried thereby to drop by gravity back into theposition shown in Fig. 1. By merely ad-' mitting the fluid into thepassage 10, the piston and table as well the parts carried thereby areaccordingly caused to automatically rise and fall alternately as long asthe As the Portland cement or other material to be packed diminishes involume to a con- .55 r placed in the barrelor other receptacle be hood19 from whichthe material passes into siderahle extent during thecompacting thereof, the saidmaterial cannot all be the barrel during thecompacting operation.-

The hood .is provided inwardly from its lower end with a c1rcnlar flange.20, the

lowersurface of which has secured thereto a layer 21 of felt, rubber orother yielding material which is adapted to rest upon the upper edge ofthe barrel orother receptacle to form a tight joint between the hood andthe barrel when thehood is secured in place on the barrel, ashereinafter described. The hood 19, as shown, extends downwardly intothe receptacle 2 belowthe groove or crozing for receiving the head ofthe receptacle or barrel and is spaced from the side of the barrel belowthe flange 20; This arrangement not only tends to prevent the escape ofmaterial at the joint between the reservoir and receptacle, but alsokeeps the hereinafter described weight away from the side of the barreland prevents the accumulation of material in said groove so that thehead of the barrel may be easily inserted after the same is packed andprevents the paper lining used in such barrels from being torn. Forconvenience inthe introduction into the hood of the material and theweight hereinafter described, the upper edge of the hood is preferablycurved outwardly-1 to a slight extent'as shown at 22. For securing thehood to the barrel and also securingthe latter to the table or support1, I have shown 'ap1urality of fastening means each comprising a rod23having at the lower end a hook-shaped portion 2a engaging under aFlange 25 extending downwardly from the table or support 1 at theperiphery thereof. The upper end of this rod is provided with a nut anda washer 26 and 27 respectively, the washer 2? bearing upon the upperend of a coiled spring 28 which encircles the upper end of the rod 23and bears at its lower end upon a U-shaped member or stirrup 29,

the parallel arms of which extend upwardly and are pivotally securedwithin a Ushaped operating member and clamp 30 which is pivotallyconnected as shown at 31 between parallel. projections 32 extendingoutwardly from the hood 19. The pivot 31 and the pivot between thestirrup 29 and the member 30 are so arranged that when-the partsare inthe clamping position shown in Fig. 1, the spring 28 tends to rotatethe'in'ember 30 in a direction about the pivot 31 toward the hood l9 andto hold the member 30 in engagement with the hood 19.. The upper portionof the member 30 is bent outwardly at an angle to themajor portionthereof to 7 permit the cylindrical rod 33 at the upper end of saidmember to be readily grasped by the operator to pull said member 30outwardly of the hood 19 until the pivot between the member 29 and themember 30 has been moved sufficiently away from the hood,- referring toFig. 1, t0 cause the spring 28 to move said member entirely out ofclampmg and into, inoperative position, where-,

upon the hooks 241 may be readily disengaged from the flange 25, thehood 19 lifted from the barrel or receptacle 2 and the lattcr taken bethe support or tablel. From] the above it will be seen that'each of thefastening means shown comprises a'toggle .joint. It is understoodthatwhen the barrial in the receptacle vunder pressure, the

means shown comprising a weight 34 which is adapted to rest on thematerial and to move upwardly and downwardly with the same. This-weight,as shown, is made up of a number of verticallyalined disks which may bepunched out of suitable material so as to provide openings 35, theopenings of the various disks being alined with each other so as topermit the ready escape from the material of the air located between thesmall particles of the material before the latter is compacted. Theweight, as the material is compacted, moves through the hood, beingloose therein to allow the escape of air between the hood and theweight. I have provided means to prevent the escape of the powderedmaterial past the weight and especially through the openings 35 dur ingthe compacting operation. For this purpose I preferably disposebetween'the weight and the material a pad or a layer of felt, linen orother porous fabric 36 which. permits the air. to escape there through.This pad also keeps the weight out of contact'with the material andprevents vthe same from digging into the material. In Fig. l, the weightis shown in its final position after the compacting. is finished, whilein Fig. 2 itis shown in the ini tial position before the compactingoperation. This pad extends beyond the peripheryof the weight anditsedge is bent upwardly and engages the inside-of the hood or reservoirsubstantially asshown, wherebythe escape of material through the passagebetween the weight and the reservoir is prevented. As shown in thedrawing,-a rod 37 headed at its lower end extends through the'centers'of the disks and is. provided with a threaded portion 38 which carries'anut 39 arranged above a washer 40 which engages the upper surface of theweight. By screwing down the nut 39, the various disks of which-theweight is mademay be securely fastened together. A member 41 having athreaded-shank and a flattened eye '42 is secured to the rod 37 as byaturn buckle 43. Thefdistance between the eye 42 and bottom; the weightis. substantially equal to thefdepth ,of the reservoir. A

strap or other-suitableflexible member 43 extends through the eye 42 andis connectering the weight34.

ed-to suitable mechanism for raising" or'low- Referring to! Figs; 3 and,4, the hoisting mechanism may comprisean air cylinder 44 provided withan inlet opening 45 and an piston 48 which has connee'tedthereto, a'pis-' tonrod 49 connected at its lower end to the head 50 to which thestrap or other flexible member 43 is secured. For holding the weight inelevated position, I preferably provide a plurality-of bell crank levers'51 a which are pivoted, as at 52, to the lower head of the cylinder 44and are provided at-thei-r lower ends with inwardly directed hook-shapedportions 53' adapted to engage the under side of the head .50. The hori-Zontal and vertical arms of each lever 51 are offset from each other andconnected by a V trunnion or horizontal pivo'tportion 51" con stitutingthe pivot The upper end of each vertical arm as shown in Fig. 4 1s arranged within a slot in said head. Tension springs 54 each-secured atone end to astationary member 55 on the lower head of the cylinder-'44and. at their other ends to the outer ends of the horizontal arms of thebell crank levers 51, tend to hold the hooks 53 in operative engagementwith the head 50. For releasing the said hooks or catches from the head50 to permit the weight 34to be lowered, 'I provide a leveringdownwardly on the outer right hand portion of the lever 56, referrmg toFig. 3,

the links 61, 63 and '64 will be elevated and inner surfaces of thehooks 53 are prefer-v ably upwardly and inwardly inclined so that as thehead 50 is elevated, it wedges horizontalarms'of the-levers 51. By draw-I the hooks 53outwardly until the head'50 is in a'sufiiciently elevatedposition to permit lac gage'dby the upperside of lever 56 tolimrf,

space within the cylinder 44 below, the piston 48 when the weight hasbeen raised to its upperposition, thus permittingthe escape of air fromthe cylinder.- It is understood'that at this time the manually operablevalve controllingjthe flow of fluid into the opening 45 has been closedand the head 50-supporting the weight through the member 4L3 has beenlatched in elevated position. The employment of a flexible member, suchas the strap 43, to conneotthe hoisting means to the weight permits freemovement of the weight, duringthe compacting operation withoutnecessitating its disconnection from the hoisting apparatus. The member41 also serves as a gage to indicate when the packingoperation iscompleted. V

In operation, the barrel or receptacle 2 is placed upon the table 1 withthe casing 3 about the barrel, thetable 1 being inits lowermostposition, as shown in 3 The hood 19 is then placed upon the barrel,

the hooks 24 placed over the flange 25, and the members 30 movedinwardly toward the hood to cause the latter to be securely connected tothe barrel 2 and the barrel to be rigidly secured to the table orsupport 1. After this, a predetermined amount of the cement. or othermaterial tobe packed is placed within the barreland the hood. lVith.

the apparatus-shown in the drawing, this material extends substantiallyto the upper end of the hood. The'porous covering 86 is now placed ontop of the material to be packed. By drawing downwardly the wire 65, thehooks'53 are disengaged from the head and the weight 34 is permitted tomove downwardly by gravity until it rests upon the covering 36 on thetop of the cement or other material. By now turning on the air or otherfluid to cause the same 'to' flow into the opening 10, the table orsupport 1 and the parts carried thereby, including the weight 34, arecaused to move automatically upwardly and downwardly with quick andviolent movements, thus completely shaking the material to be packed andcausing the same to become compacted, the compactmg being increased bythe impact orhammer actlon of the pressure means or weightSd on thesaidmaterial. During the compacting of the material, the air beopening10. The movement of the support and the parts and material carriedthereby i8.

a jigging movement, 1 means used imparts to thereceptacle a rapldmovement in opposlte directions, in which both the up and down strokesarequick and:

violent, resulting in a jar or shock at the end of each stroke so thateach stroke is a com pacting movement. The wei ht by reason of itsinertia reacts against the cement or other material to be packed duringeach'stroke in this jigging operation, for when the support 15 raisedthe weight tends to remain immovable, causing the material, to becompacted during the upward movement, and when the receptacle movesdownwardly to its lowermost limit, the weight will continue to movedownwardly, compacting the material still further. lVhere thetermjigging is used in the claims, it is intended to mean broadly a seriesof rapid shocks or jars. Where thisterm is used in its narrower sense,involving a jar on the upward movement, or for both the upward anddownward movement, the language employed clearly points out suchnarrower meaning. When the material has been sufficiently compacted,air'or other fluid is admitted through the inlet 45 to the spacebelowthe piston 48 to cause the latter to risein the cylinder 44: andlift the he specificjigging weight 34 out of the hood 19. The latter maynow be removed from the barrel 2 by moving the members 30 outwardly anddisengaging the hooks 24. I preferably-compart theimaterial until itacquires'the desireddensity and just fills the barrel or otherreceptacle, whereupon the head may be secured to the barrel. "Thecompacted material, in case of such materials as Portland cement,resembles a soft stone in consistency. l

My method which may be performed by the above described apparatus or byany other sultable apparatus is carried out substantlally as follows :The receptacle and the idly jigged or reciprocated, violently jar ringand compactmg the material therein until theentire mass has been socompacted that the extension of the receptacle is empt ed and thematerial is all compacted within the receptacle into a mass ofstone-like I extension thereof are first filled with a pre-' determinedamount of material. Pressure is consistency, the air being permitted toescape during the operation without allowing any of the material toescape. My method can be used for filling receptacles with materials ofvarious kinds such as Portland ce ment'and canbe varied according to thena V ture of the material and other'conditions.

I have found that when Portland cement .is packed by my improvedmethodand apparatus, large weights may be carried by or transmitted to thecement and by it'to :the zwhole receptaclestructure, so thatthe'particular part of the receptacle-which is sub jected to the blow orpressure is relieved Much lighter barrels or other receptacles mayaccordingly beused than heretofore,

which results in a material saving i n .the cost of the receptacles.Furthermore, by

reason of the fact that the material is, com

pacted in the receptacles, much smaller receptacles may be used thanheretofore for a given weight of cement. Various modifications may bemade in the constructiondisclosed, without departing from the spirit ofmy invention.

What I claim as new and desireto protect by Letters Patent of the UnitedStates is a follows: 1

- 1. In apparatus for packing material without preventing the escape ofair from said material and receptacle and means for imparting alternate.up' and down movement to said support, substantially-as described. u v

2. In apparatus forpackinglmateriahthe combination of a support for areceptacle, 'a welght arranged to rest on materlal 1n the receptacle,said weight having openings to permit the escape ofair-therethrough,and.

means for imparting alternate up and down movement tosaid support tocause the material to be compacted in the receptacle, sub.- 7

stantially asdescribed. I

3. In apparatus for packing material, the

combination of a supportforareceptacle, a weight arranged to restonmaterial' in the receptacle, said weight having openings-to permit theescape of air, therethrough, a po rous device adapted to be interposedbe tween said weight and the material in the receptacle, to prevent theescape of material from the receptacle and means for impart ingalternate up and down movement to said support to compactthe material inthe re- 3 directionsto said'supportato, causethe ma; I terial to becompacted in-the receptacle. v

ceptacle, substantiallyas described. 4. In apparatus forpacking-material in receptacles, I the combination of ,a 1 support131011.54 to said support, substantially as 'described; H

5. In' a ps-Leas. a the class aerate, I-

the combination of asupport for a recep 5 Y tacle, a weight arranged torest on'zmaterial in the recept'acle,-means. for efi'ecting theraisingqof said weight "from operative posi" means operableautomatically, when' said weight reaches a desired elevation to hold Ition with", respect: to the receptacle, and from a large ,part of theforce thereof.

the "samein elevated position, substantially as described.

the combination of asupport for a recep: tacle, a. weight arranged torest lon the material 1n the receptacle, means for raising 6. Inapparatus of the class ilescribed,- I

theweight from operative position with reon the support topreventmovement of the spect tothe receptaclo,rneans operable auto--matically-when said weightreachesthe do-- sired elevation'to hold-thesame' in posigreceptacle from operative -position,-means for exertingpressure; on the material. in the receptacle, means for impartingalternate, rapid,violentfmovement 1n opposite directionsto the supportand means for preventing distortion ,ofthe receptacle during such"movement.

1 8. In apparatus tor"packing material receptacles, thecombination of asupport upon. which the" receptacle rests, means. .for rigidly securingthe receptacle in. positionon the support to prevent movement ofthere-fceptacle from operative position, means for exerting pressure on thematerial ,in the re.- ceptacle, the air being permitted toescape fromthe material and receptaclej means for imparting alternate,-:ra'pid,violent, move- 110 I ment in opposite directions tothe support and acasing fitted fabout andlengaglng said receptacle toprevent-distortionthereof.

. ,9. In apparatus-for packing materialqin 3 receptacles, thecombinationof a support for the receptacle, means for holding the ma-zterial in the receptacle under pressure,means Y I interposed between thematerialjand said pressure, means for preventingthe' escape of materialfrom the receptacle and means for j imparting alternate movement ;inopposite .110. In apparatus forpacking material. receptacles, thecombination of asupporti'for Q the receptacle, a weight arranged to rest.on

the material inthe receptacle, the escape of air from saidmaterial'andreceptacle being. j

allowed, means for securingthe-I receptacle on the: support, and meansfor imparting alterms: iele e ra spen m --ment to said support to causetheumaterial to be compacted in the receptacleand theair to be forcedfrom said material.

11.'In apparatusfor packing material in "receptacles, the combination ofa support for the receptacle, a weight arranged to rest on thematerialin the receptacle without preventing the escape of air from thematerial and receptacle, means for preventing the escape of pulverulentmaterial from the receptacle while permitting the escape of airtherefrom, and means for imparting alternate up and down movement tosaid support tially as described.

to compact the material in the receptacle and to force the air from thematerial, substan- 12. In apparatus for packing receptacles a supportfor the receptacle, a reservoir for the receptacle, means for rigidlysecuring the reservoir and receptacle to the support and to each otherto prevent relative movement thereof, means for exerting pressure onmaterial within said reservoir and receptacle,

' and means for imparting alternate,-rapid,

violent movement in opposite directions to said support.

13, In apparatus a support for the receptacle, a reservoir for thereceptacle, unitary spring controlled means for securing the reservoir,the receptacle and the support together to prevent relative movementthereof, and means for imparting alternate movement in oppositedirections to said support.

14. In apparatus .for packing receptacles, a support for the receptacle,areservoir for the receptacle, means comprising a toggle for I securingthe'reservoir, the receptacleand the for securing the reservoir, thereceptacle and the support together to prevent relative movementthereof, one member of said toggle being provided with means formanually moving the same into and outof operative position, and meansfor imparting alternate movement in opposite'direction's to saidsupport.

. V 17. In apparatus for packing receptacles,

the combination of means for holding the material 1Il-t h6 I'6Cpt&C/le'under pressure during the packing operation, a pad interfor packingreceptacles,

posed between saidpressure means an'dmaterial and-means for jigging thereceptacle, substantially as described.

18. In apparatus for packing receptacles, a support for the receptacle,a reservoir secured against movement with respect to projecting into thereceptacle, the receptacle being secured on the support, means forholding the material in the receptacle underv pressure during thepacking operation and 'means for jigging the support, causing'said forjigging the support and meansto prevent the escape of material fromsaid-receptacle during the jigging operation.

20. In apparatus for packing receptacles, a support for the receptacle,a reservoir secured against movement with respect to and projectinginto'the receptacle, a weight in said reservoir for holding the materialin the receptacle under pressure during'the packing operation andfeeding material from said reservoir to the receptacle, said weightproviding for the escape of air from the receptacle during the packingoperation, means interposed between said weight and material topreventthe escape of material past said weight, means for rigidlysecuring said receptacle to the support, a casing mounted upon saidsupport and encircling the lower end of said receptacle to prevent idistortion thereof and means for j igging. the support imparting arapid, violent movement thereto and causing said'weight to react on thematerial. a

21. In apparatus for packing receptacles, a reservoir secured againstmovement with respect to and projecting into the receptacle, means forholding material in the re- 1'1'5 ceptacle under pressure during thepacking operation and providing for the escape of. air therepast, meansfor jigging the receptacle, and means interposed between said pressuremeans and said material to pre- 1 20 vent the escape of material alongwith the a air from thereceptacle during such packing operation. v V p22. In apparatus for packing receptacles, a reservoir secured againstmovement with respect to and projecting into the receptacle, a weightfor holding material in the receptacle under pressure during the packingoperation, means for jigging the receptacle, said weight. permitting theescape of air I a support for the receptacle, means for hold- T from thereceptacle during the packing 0peration, and means interposed betweensaid weight and material to prevent the escape of material along withthe air from the receptacle during such packing operation.

23. In apparatus'for packingreceptacle's,

ing the material in the receptacle under pressure during the packingoperation,- means for rigidly securing the receptacle to the support,said apparatus providing for the escape of air during the packingoperation, means resting upon said support- 7 and incloslng saldreceptacle for preventing distortion thereof during the packingoperation and automatic jigging means for the support for imparting tothe same sudden, violent and rapid movements in opposite directions andcausing said. pressure means to react against the material. V 24. Inapparatus for packing material in receptacles, the combination of asupport for the receptacle, means for rigidly securing the receptacle inposition on the support, means for exerting pressure on the, material inthe receptacle, means for im-- parting alternate movement in oppositedi-J rections tothe support, and a casing fitting about the receptacleto prevent distortion thereof. i

25. In apparatus'for packing materialsin receptacles, a reservoir fittedto said-recep-f tacle, means for rigidly securing said reservoir,receptacle and support together, weight in said reservoir for exerting apressure upon said material and causing the material to feed from saidreservoir into the receptacle during the packing operation, meansinterposed between said material and weight to prevent the escape of material past the weight but to allow the escape of air therepast, acasing encircling the lower end of said receptacleand mounted upon saidsupport for preventing the in each direction, substantially asdescribed.

27. In apparatus for packing receptacles, a support for the receptacle,a member on the support engaging and inclosing the receptacle forholding it on the support, a

reservoir secured to the receptacle and supported thereby, and means forlgglng sald support, receptacle and reservoir, substantially asdescribed. j v

28. In apparatus for packing receptacles,

a reservoir secured in position relative to the receptacle and .movabletherewith, a

weight movable in said reservoir to compact I the matenal from sa1dreservoirv into the receptacle, a rigid member secured to the weight andprojecting upwardly therefrom,

the distance betweenthe upper endof said member and the bottom of saidweight be ing substantiallyas great as the depth of the reservoirwhereby the member performs the dual function of serving as a gage andproviding means for lifting the weight from the reservoir and means forigging the re-.

ceptacle and reservoir, substantially; as de scribed.

" 29. The herein described method of pack ing material which consistsin-filling a recepta'cle, and an extension thereof with a predeterminedamountof material in excess of the capacity of the receptacle,compacting the material by. jigging the receptacle rapidly in oppositedir'ections and continuthe receptacle and forms amass of stone-likeconsistency therein, substantially "as described. V

f 30. The herein described method of packing material which consists inplacing in a receptacle a mass of loose material, placing 'a'weig'htonthe material, and compacting thematerial by jigging the receptaclesufficiently fast to causesaid weight to act, by

ing the jigging until the material has en tirely left the extension,substantially fillsreason of its inertia and of gravity, against thematerial to compact it upon movement of the receptacle in eachdirection, substantially as described. 7 v 31. The herein" describedmethod of packing Portlandcement 'in abarrel having a groove to receivethe head thereof which consists in filling the barrel and an extensionthereof witha predetermined amount of cement, placing a weight on thematei I rial, compacting the material and'forcing air therefrom withoutallowing the escape of cement by'jigging the barrel sufliciently f fastto cause said'weight to'act, by reason of its inertia and of gravity,against the material to compact'it upon movement of the barrel in eachdirection, meanwhile preventing the accumulation of cement within saidgroove and preventing the weight from digging into thematerial, andvcontinuing the igging until substantially all the material has leftthe/extension, substantially fills the barrel up to the groove andvforms a mass of stone-like consistency therein, substantiallyas'described'.

This specification signed and witnessed this 29th day of March,.1915.

' WILLIAM H. MASON.

Witnesses: V I l FRED RICK BAQHMANN,

' WILLIAMMA. HARDY.

